Shasta leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 61% of adults in Shasta typically vote, near the U.S. average of about 62%. Among adults in Shasta, ~20% vote Democratic, ~41% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How Shasta compares
Among cities within 25 miles, Shasta leans more Republican than 8 of 23 neighbors.
Shasta runs about 55 points more Republican than California as a whole. California leans Democratic overall, while Shasta is one of the few Republican-leaning pockets.
Why Shasta leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Shasta, not a ranked or complete list of what matters most.
Shasta votes against the grain of California. California leans Democratic overall, while Shasta runs about 55 points more Republican. Rural areas vote Republican, and Shasta sits in the bottom quarter on density (about 4%, below 87% of cities). A high family-household share predicts Republican voting, and about 79% of households in Shasta are family households, above 87% of cities.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Shasta, CA sits in the bottom quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Shasta looks the way it does
Crowded housing lines up with lower turnout. About 6% of homes in Shasta have more than one occupant per room, above 92% of cities. Strong routine healthcare access lines up with higher turnout, and Shasta sits in the top quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Keswick, CA R+41
- Redding, CA R+25
- Summit City, CA R+40
- Ono, CA R+35
- Shasta Lake, CA R+35
- Igo, CA R+35
- Olinda, CA R+44
- French Gulch, CA R+35
- Anderson, CA R+36
- Palo Cedro, CA R+42
Cities with Similar Populations
- Williston, OH R+39
- Whitesville, NY R+52
- Riverdale, NE R+65
- McLean, TX R+86
- Pachuta, MS R+5
- Ludington, WI R+29
- Toomsboro, GA R+35
- Crestmore Heights, CA R+2
- Veseli, MN R+44
- Dodd City, TX R+73
Sources and methodology
Precinct-level voting records used to fit the model come from California Secretary of State, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.